Finding the Fourth Proportional to 55,148.84, 82,099.54 and 54,820.79

Step by Step Solution

1. Step 1: Write the proportion equation
   55,148.84 : 82,099.54 = 54,820.79 : x
2. Step 2: Convert to fraction form
   55,148.84/82,099.54 = 54,820.79/x
3. Step 3: Cross multiply
   55,148.84x = 82,099.54 × 54,820.79
4. Step 4: Simplify right side
   55,148.84x = 4,500,761,641.44
5. Step 5: Solve for x
   x = 4,500,761,641.44/55,148.84
6. Step 6: Final answer
   x = 81,611.18